Combined road grader and scraper



s. o. HAYs. COMBINED ROAD GRADER AND SCIIAPER.

APPLICATION FILED APR'. I4. 1920.

Patented Apr. 11, 1922.

UNITED STATES PATENT OFFICE.

SVAMUELL O. HAYS, O? HLALLS SUMMIT, KANSAS.

COMBINED ROAD GRADER AND SCRAPER.

Specification of Letters Patent. Patented Apr, 11, 1922,

Application filed April 14, 1920. Serial No. 373,920.

Y inexpensivev construction.

More particularly it is my object to provide a road grader and scraper, having a guide device of novel construction.

A further object is to provide a road grader. and scraper, having means at one end for preventing the guide from gauging or cutting too deeply into the bank.

A further object is to provide in a grader having ay scraper blade, improved means for attaching the draft to the scraperblade in such a manner that one end of the scraper blade maybe made to run deeper than the opposite end, the said means being provided with means so arranged that one of the draft members may be attached to a grader blade at a point back of the blade iii such a manner that it will not interfere with the movement of the dirt relative to the face of the blade.

A further object is to provide in a grader and scraper of the kind mentioned, means for applying the power, at the end of the4 grader which makes a shallow cut to permit the desired pivotal movements.

With these and other objects in view, my.

invention consists in the construction, arrangement, and combination of the various parts of my device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying drawings, in which: y

Figure 1 shows a top or plan view of the grader, embodying my invention.

Figure 2 shows' va front elevation of the same.

Figure 3 shows a side elevation of my grader; and

Figure 4 shows a detailed, sectional view taken on the line of Figure 1.

In the accompanying drawings, l have used the reference numer l 10 to indicate a relatively heavy bar or the like, comprising the body of my grader, and having mounted 4on the lower edges thereof, a grade blade 11, the lower edge of which is curved forwardly, as at 12. See Figures 3 and 4.

A detachably dirt engaging board 18 may be provided with pins 14 adapted to be rcceived in suitable holes in the top of the bar 10, so that the board 13 may be mounted on the bar to prevent dirt from piling up and lfalling over the bar, during certain classes of work or under certain working conditions.

At one end of the bar 10, the lgrader blade 11 is provided with an enlarged portion 15 and arranged with its upper edge substantially flush with the upper edge of the bar 10, and with its extreme end curved forwardly, as at 16. The lower corner of the portion 16 is beveled off, as at 17.

Secured to the upper portion of the bar 10 near the grader blade portion 15 is au eyebolt or the like 18, to which may be attached a chain 19 or its equivalent, extending forwardly and secured to an evener bar20. 1

Secured to the rear surface of the bar 10 near the lower portions thereof at the end opposite the eyebolt 1S is a bracket 21, pivotally supported on which is a block or the like 22.

Rotatably mounted in the block 22 is the shank 23 of a draft beam 24, having a shape similar to that of a plow beam. Secured to the forward end of the draft beam 2a is a chain 25, extending forwardly, and which ma be secured to anevener bar 26.

t will be seen that the beam 24 has a laterally swinging movement on account of the rotary mounting of its shank 23, and also has a vertical swinging movementon account of the pivotal mounting of the block 22 on the bracket 21 at 2T.

Secured to the upper portion of the bar 10 at its end adjacent to the blade portion 15 is a stout bar 28, extending rearwardly and laterally in the genera-l direction of the prevents the blade from gauging into a bank arms 32, forming part of the mounting of the castor wheel.

Between the lower ends of the arms 32 on the shaft 38 is mounted a castor wheel 811e, which. serves as a support for the grader.

Pivotally supported on bracket 36 on the rear of the bar 10 are levers 37, which at their lower portions have rearwardly 'and downwardly inclined arms 38, terminating in shoes 9,9. On the brackets 36 are lodged sectors l0 arranged to coact with pawls 41 on the levers 37.

lSecured to the end of the bar10 adjacent to the beam 2e is a bracket 42 on the neck of which is the rim 43, which may bev hitched tofor drawing the grader endwise for transporting it from place to place,

when this is desired.

In the practical use of my improved' road grader and scraper, the levers 37 are arranged in substantially upright position, whereby the grader will rest upon the blade 11 and the wheel 35 in the position for use, and the shoes 39 will be held slightly above the surface of the ground.

In actual use the chains 19 and Q5 are inclined to the. lever, as shown in Figure 1 in dotted lines, and the grader is inclined at an angle to .the direction of its travel, and is normally supportedV and held in an upright position by the castor wheel 35.

irregularities in 'the surface of the ground are smoothed down and filled in and surplus dirt is moved toward the right end Vof the drag and discharged at said end.

The wheel is of importance in furnishing a guide, whereby the face of the grader is held to the proper angle with relation to the ground surface. The curved end 16 or the like. The handle 29 may begrasped for use in turning corners or when `it is necessary for guiding under special circumstances.

When it is desired to draw the grader over the ground without operating, the levers 37 are grasped and forced rearwardly and downwardly for lifting the grader and causing it to rest upon the shoes 39.

In using a grader on roads, it is ordinarily the desire of the operator that the ioad should` be crowned, and that the cut of the grader should be slightly greater at one endl thanat the other. In the grader herein shown, it is my purpose to use the device for cutting more deeply at the left hand end of the grader than at the right handV end, For accomplishing this purpose, it is desirable that the draft on the` right hand end should be applied at a lower point on the grader. This is accomplished with my grader by lconnecting the eveiier bar 26 with the draft beam 24C, which is connected with the-grader at a point behind the grader and relatively lowdown on the grader.

is necessary to make the connection behind the grader to avoid interfering with the dirt, which slides in front of the blade 11. rilhe beam 2e makes it possible to connect behind'the grader and the pivot 27 permits the up and down swinging of the beam, while the rotary mounting of the shank 23 permits the lateral swinging of the beam for allowing frequent working of the parts. rfhis structure I consider an importantV one of my invention.

Some changes may be made'in the construction and arrangement of the various parts of my combined graderrand scraper, without departing from the real purpose and intent of my invent-ion, and it is my purpose to cover by my claims, any modified forms of structure or use of mechanical equivalents, which may be reasonably ineluded' within their scope.

I claim as my invention:

1. In a combined road grader and scraper, a drag device, having a blade, means for .imposing draft on said device near one end thereof above the lower part thereof, means including a member mounted forL'pivot'al` movement in two planes, for imposing draft on the back of said drag device near the lower part at the opposite end'thereof.V

2. In a combined road grader and scraper,

a drag device, havinga blade, means for imposing draft on said device nearoiie end thereof above the lowerpart thereof, means including a member mounted for pivotal movement in two planes, for imposing draft on the back of said drag device near the lower part at the opposite end thereof, said last means including a pivotally mounted 'block and a draft beam having a shank rotatably mounted in said block.

3. In a combined road gra der and scraper, a drag device having a blade, one end of which is curv d forwardly, means for iinposing draft on said blade near the curved end Y thereof and above its lower edge, means for imparting draft to the opposite end of said blade and mounted for pivotal movement at` a point back of said blade andnear its lower edge, means for controlling and supporting said blade. y.

Des Moines, Iowa, March 13, 1920.

f sAMUsLL o. irars. 

